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gulez thanks but its too complicated... i just want to use as much space from the two 500GB drives in stripped mode as possible... iv made public pool with after that i add to the vm new hdd and max was 871GB... after format i have only 858GB which is poor i think...

the drives are 4x WD RED 1TB NAS... how can i check every single hdd from the zfs pool to find out which one is slow?

root@pve-klenova:~# smartctl --all /dev/sda | grep Short Short self-test routine # 1 Short offline Completed without error 00% 26667 - root@pve-klenova:~# smartctl --all /dev/sdb | grep Short Short self-test routine # 1 Short offline Completed without error...

hello root@pve-klenova:~# zdb -C rpool | grep ashift ashift: 12 ashift: 12 root@pve-klenova:~# zdb -C public | grep ashift ashift: 12 ashift: 12

here the results, please see, its a shame i think: root@pve-klenova:~# zpool status pool: public state: ONLINE scan: scrub repaired 0 in 0h0m with 0 errors on Sun Oct 8 00:24:02 2017 config: NAME STATE READ WRITE CKSUM public ONLINE...

well i dont know but it seems totaly bad root@pve-klenova:~# pveperf CPU BOGOMIPS: 38401.52 REGEX/SECOND: 450140 HD SIZE: 745.21 GB (rpool/ROOT/pve-1) FSYNCS/SECOND: 58.78 DNS EXT: 29.48 ms DNS INT: 18.56 ms (elson.sk)

ok i did: root@pve-klenova:~# cat /sys/module/zfs/parameters/zfs_arc_max 7516192768 root@pve-klenova:~# cat /sys/module/zfs/parameters/zfs_arc_min 4294967296 root@pve-klenova:~# free -h total used free shared buff/cache available Mem: 15G...

i dont understand this formula So the formula is: total_ram - 1 GB - expected_GB_for_vm/ct = zfs_arc_max; zfs_arc_max >= 4 GB. i have 16GB so 16GB - 1GB - 8GB = 7GB so how to set the zfs arc?

edit: when coping files inside vm 2MB/s :(

during vm migration all vms totaly lagging... ssh very slow, some of the vms didnt works well... cpu usage during clone show about 10percent usage, but IO delay 28percent... is it normal on a raid 10 zfs proxmox Virtual Environment 5.0-30 with 16GB RAM???? i'v had proxmox v3 with raid 1 also...

i just want to use the whole space of the zfs pool public in vm200... i need to create storage of zfs with container and disk image and than add HDD in VM as SCSI and calculate disk size of GB? or how to do it please?

ok i have done zpool create -f -o ashift=12 public /dev/disk/by-id/ata-MB0500EBZQA_Z1M0EHYH /dev/disk/by-id/ata-MB0500EBZQA_Z1M0EGEJ now i have root@pve-klenova:~# zpool status pool: public state: ONLINE scan: none requested config: NAME STATE READ WRITE...

yes proxmox 5 fresh install with 4 1TB WD RED sata2 disks and the performace is very poor. copiing from one hp sata2 drive to rpool 20MB/s :( direct in pve not in VM!!! pool: rpool state: ONLINE scan: none requested config: NAME STATE...

if i have poor r/w with zfs raid 10 4x1TB sata2 disks, i should buy another 1TB SSD disk and add it for ZIL? :(

yes i need the capacity... following this wiki https://pve.proxmox.com/wiki/ZFS_on_Linux i will do: zpool create -f -o ashift=12 tank <device1> <device2> is that correct? why ashift and why 12?

ok now i have 4x1TB HDD in pool root@pve-klenova:~# zpool status pool: rpool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM rpool ONLINE 0 0 0...

ok can somebody help me with this? isnt it possible to use qcow images in new proxmox 5? i have made backup of /var/lib/vz/images from old proxmox 3.x and now i want it to use it in new 5... do i have to create new VMs and than somehow import/convert qcow2 images to zfs? can you provide me step...

ok after reboot it seems to have the disks imported by ids root@pve-klenova:~# zpool status pool: rpool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM rpool...

i was folliwing you post for pool with /dev/disk/by-id/ but ended with error, see screen shot please

my bad sorry... isnt it possible to use qcow images in new proxmox 5? i have made backup of /var/lib/vz/images from old proxmox 3.x and now i want it to use it in new 5... do i have to create new VMs and than somehow import/convert qcow2 images to zfs? can you provide me step by step how to make...